1019999960 has 64 divisors (see below), whose sum is σ = 2662053120. Its totient is φ = 344488320.

The previous prime is 1019999957. The next prime is 1019999989. The reversal of 1019999960 is 699999101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8426 + ... + 45945.

It is an arithmetic number, because the mean of its divisors is an integer number (41594580).

Almost surely, 2^1019999960 is an apocalyptic number.

1019999960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1019999960 is an abundant number, since it is smaller than the sum of its proper divisors (1642053160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1019999960 is a wasteful number, since it uses less digits than its factorization.

1019999960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54456 (or 54452 counting only the distinct ones).

The product of its (nonzero) digits is 354294, while the sum is 53.

The square root of 1019999960 is about 31937.4382191183. The cubic root of 1019999960 is about 1006.6226964016.

The spelling of 1019999960 in words is "one billion, nineteen million, nine hundred ninety-nine thousand, nine hundred sixty".